While that's not so much of a study as it is one guy nitpicking over brightness, it had some interesting points.
I attribute the menu problems he had to either the studios implementing them wrong, or him having a crappy player. There's no logical reason to assume that something inherent to Blu-ray causes menus to move slowly. Also, people only use single layer Blu-rays right now which are smaller than the HD-DVDs, no one will deny that, but that also may explain certain things there. The differences he pointed out were so small and/or circumstantial as to be almost irrelavant.
But it stands to reason that a Dual layer disk would outperform a single layer disk.
And finally, saying HD-DVD is easier to use it a fantastic thing to say. Once again, there is NOTHING that would make one inherantly easier to use than the other one, with the possible exception being the platform the menus are made in. Blu-ray uses Java, which when implemented correctly, means it can be as easy or as hard to use the developers make it.
My real point here is that it's too hard to make a verdict either way, but the fact still stands that Blu-ray is the superior media, and we can't argue against that using one guy's opinion.
And a poll by microsoft doesn't sway me one bit :P Online polls are silly anyway.
(Edit) Oh yeah! And for some reason Warner used MPEG-2 instead of VC-1 on its Blu-ray releases, which is more than enough to make the differnce. They don't do that anymore, and the picture quality is pretty much exactly the same.
http://www.highdefdigest.com/feature_blurayvshddvd_roundtwo.html